To be a bit afraid of my neighbour?

The other day she put a note through our door saying she had seen my husband and my babies and wanted me to phone her (I have never spoken to her before). I was unsure whether it was a bit creepy or quite nice that she wanted to offer her help with our twins.

My DH thought it was rather odd, but I felt I should knock on her door and say hello, thanks for the offer, I'll let you know if I should ever need you and no I won't be asking you to babysit while I have a bath?!? (she suggested this even though we'd spoken for less than 5 minutes!)During the conversation I managed to say that I hadn't actually left the babies at all yet ( not quite ready after they were in SCBU) and hoped that would be the end of it - just maybe a hello in the street.But now I've had another note asking if she can come round this week I know I am being a total wuss, but I just don't know how to handle this and how to tell her that I don't need her to be some kind of surrogate grandparent ( my parents live abroad), just a friendly face in the neighbourhood is enough.

I have actually avoided going out today so far incase she wants to talk to me - help.Ps you may have guessed I'm not good at confrontations or saying no!!